Fair uni- and multicasting in a ring metro WDM network

Chiara Piglione, Martin Reisslein, Fabio Neri

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Packet-switched wavelength-division multiplexing (WDM) ring networks have been extensively studied as solutions to the increasing amount of traffic in metropolitan area networks, which is widely expected to be a mix of unicast and multicast traffic. We study the fairness between unicasting and multicasting in slotted packet-switched WDM ring networks that employ a tunable transmitter and fixed tuned receiver at each node and a posteriori buffer selection. We find that single-step longest-queue (LQ) buffer selection generally results in unfairness between unicasting and multicasting or a fixed relative priority for multicast versus unicast traffic. We propose and evaluate dual-step buffer selection policies that achieve fairness and allow for a range of relative priorities of multicast versus unicast traffic.

Original languageEnglish (US)
Pages (from-to)601-622
Number of pages22
JournalJournal of Optical Networking
Issue number8
StatePublished - 2004


  • (060.4250) Fiber optics and optical communications : Networks
  • (060.4510) Fiber optics and optical communications : Optical communications

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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